Patent Picks—Effervescent Surfactants, Vegetal Thickeners, Controlled Delivery and More

By: Rachel L. Grabenhofer

Posted: December 21, 2011

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Nonsticky cosmetics with antioxidant and moisture-retaining properties equal or superior to those containing vitamin E derivatives
US Patent 8080581
Publication date: Dec. 20, 2011
Assignee: Shiseido Company Ltd.

Disclosed in this patent is a cosmetic having equal or higher antioxidant activity and moisture retaining properties than those containing conventional vitamin E derivatives. While conventional vitamin E derivatives are satisfactory in function, according to this patent, their application as solubilizing agents or emulsifiers are still unsatisfactory. In response, the present inventors have found that vitamin E derivatives having hydrophobic butylene oxide groups and hydrophilic ethylene oxide groups, as the substituent, at position 6 of the chroman skeleton of vitamin E have equal or higher antioxidant activity and moisture retaining properties than conventional vitamin E derivatives. Regarding surfactant performance such as emulsifying ability and solubilizing ability, they also have much higher activity and effect, compared with the conventional vitamin E derivatives. Further, these materials reduce the sticky feeling on the skin.

Colored aqueous cosmetic compositions
WIPO Patent Application WO/2011/154905
Publication date: Dec. 15, 2011
Assignee: L'Oréal, X. Blin, L. Guerchet and A.M. Lezoray

The present invention relates to a cosmetic care and/or makeup composition comprising: at least 65% w/w of an aqueous phase, at least 2% w/w of pigments that are dispersed and/or dispersible in aqueous medium, at least one water-soluble or water-dispersible gelling agent in a content ranging from 0.05% to 40% w/w, and at least one polyol containing from 3 to 12 carbon atoms. Said composition has a viscosity at least equal to 600 Pa.s at a shear of 0.010 s, and less than 0.8 Pa.s at a shear of 1000 s, and said pigments are first formed from a mixture including at least one polyol. In particular, the present invention is directed toward protecting a makeup cosmetic product, especially of foundation type, that is applied in a single action and that combines with its makeup performance the true sensory properties of a care product with regard to its significant content of aqueous medium, while at the same time ensuring good stability over time of the dispersed pigments.

Effervescent surfactant composition
WIPO Patent Application WO/2011/154727
Publication date: Dec. 15, 2011
Assignee: Cosmetic Warriors Ltd., H.E. Ambrosen, M. Constantine, M.J. Constantine and N. Miura